Gas-heater.



PATENTED MAR. 29, 1904;

F. G. PREESB.

GAS HEATER.

APPLICATION FILED O0T.27, 1.902.

H0 MODEL.

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Patented March 29, 1904:.

PATENT OFFICE.

FRANK G. FREEE, OF PHILADELPHIA, PENNSYLVANIA.

GAS-H EATER.

SPECIFICATION formingpart of Letters Patent N0. 756,108, dated March 29,1904.

Application filed October 27,1902. Serial No. 128,885. (No model.)

To all whom it may concern.-

Be it known that I, FRANK G. Fnnnsn, a citizen of the United States,residing at Philadelphia, county of Philadelphia, and State ofPennsylvania, have invented a certain new and which this inventionappertains may under stand how to make and usethe same, the constructionand operation will now be described in detail, referring to theaccompanying drawings, forming a part of this specification, in whichFigure 1 is a side elevation of my improved heater, portions of the samebeing broken away and shown in section for better illustration; Fig. 2,a cross-section through the heating-chamber.

In the drawings, A represents a radiator which is composed of a seriesof horizontal pipes B, and each end of these pipes is threaded with awater-tight connection into couplings G, and these couplings arearranged one above the other and fit into each other, so thatcommunication is established betweenall of the pipes. The upper end ofthe upper coupling of one pile is closed with a cap, and the lowercoupling of each pile is also closed at its lower end, and a bolt D ispassed through all of the couplings, so that the couplings are all drawntightly together, as shown in Fig. 1, suitable washers beingplacedbetween each coupling to prevent leakage. The expansionchamber (to behereinafter'described) has a yoke 1, through which one bolt D passes forbinding the sections of the radiator together.

E is the heating-chamber, which is preferably a vertical sheet-irontube, and over the upper end of this tube E is arranged a cap F.

G represents small pipes connected at their in Fig. 1.

lower ends to the lower portion of" the radiator and at their upper endsto the upper portion of the radiator, andthese pipes G are coiled withinthe heating-chamber E, as shown These coils are preferably out of linewith one another when viewed from above, as shown in Fig. 2, and while Ihave shown two pipes G it is obvious that more or less could be used.The pipes Gr are threaded into heads or caps G of the upper and lowerradiator-sections.

H is a sheet-iron casing surrounding the heating-chamber E and arrangedat a distance therefrom, so as to leave an air-space I in between,which, being open at the top and bottom, will prevent the radiation ofheat from the heating-chamber and concentrate all of the heat upon thecoil G.

J is an ordinary gas-burner arranged in the lower end of theheating-chamber E to furnish the heat for heating the coil G.

K is a pan suspended below the gas-burner and in close proximitythereto, which pan may be filled with water, which when evaporated bythe heat Will cause a certain amount of moisture to be taken up by theair in the well-known manner.

L is an expansion-chamber connected with the radiator and extendingupward from the upper end thereof, and this expansion-chamber is in theform of a cup with a screw-cap and is provided upon one side with aglass sight-tube L.

The operation of my device is as follows: The screw-cap of theexpansion-chamber L is removed and water is poured into the same, whichWater will flow through the radiatorpipes B, couplings C, and alsothrough the pipes Gr until the same are filled, and water is poured inuntil the level will rise in the expansion-chamber until saidexpansion-chamber is about half-full. Then when the gasburner J isignited the same amount of water contained in the small pipes Gr,forming the coil G, will be quickly heated and the hot water will flowupward and the cooler water will flow downward, thus establishing acirculation until all of the water is heated to or above theboiling-point, and when the water begins to boil this can be ascertainedby watching the sight-tube L, and the gas will then be regulated so thatthe water is kept to a point just below boiling, and thus a steadyuniform heat is maintained from that time on.

Of course I do not wish to be limited to the exact construction hereshown, as slight modifications could be made without departing from thespirit of my invention.

Having thus fully described my invention, what I claim as new and usefulis In a radiator, a series of horizontal pipes, couplings to which theends of the pipes are attached, said couplings fitting one above theother, extension-pipes secured to the couplings in line with the upperand lower pipes of the with which the extensions communicate, and 20binding-bolts extending from the expansionchamber to the lower end ofthe couplings, substantially as described.

In testimony whereof I have hereunto affixed my signature in thepresence of two sub- 2 5 scribing witnesses.

- FRANK G. FREESE. Witnesses:

H. B. HALLOOK, L. W. MORRISON.

